/* first */
*{
    margin: 0;
    padding: 0;
}
.first{
    margin: 0 auto;
    padding: 0;
    height: 890px;
    width: 1600px;
    border: 1px transparent solid;
    border-bottom: 1px gray solid;
    background: url(./img/1.jpg);
}
.first_header{
    margin-top: 206px;
    margin-left: 634px;
    width: 335px;
    height: 72px;
    /* border: 1px blue solid; */
}
.first_header h1{
    font-style: none;
    position: relative;
    line-height: 72px;
    font-size: 62px;
    font-style: initial;
    font-weight: 60;
    font-family: sans-serif;
    color: rgb(255, 255, 255);
}
.first_word{
   width: 770px;
   height: 85px;
   margin-top: 75px;
   margin-left: 412px;
   /* border: 1px blue solid; */
   text-align: center;
}
.first_word p{
    position: relative;
    line-height: 32px;
    font-size: 20px;
    font-style: initial;
    font-family: sans-serif;
    font-weight: 60;
    color:#fff;
}
.frist_incontent .f_in_title{
    margin-top: 145px;
    margin-left: 665px;
    width: 245px;
    height: 62px;
    /* border: 1px blue solid; */
}
.f_in_table {
    float: left;
    width: 770px;
    height: 45px;
    margin-top: 169px;
    margin-left: 414px;
    /* border: 1px blue solid; */
}
.f_in_table .f_e{
    position: absolute;
    display: block;
    width: 290px;
    height: 45px;
    margin-left: 2px;
    /* border: 1px blue solid; */
    background-color: transparent;
 
}
.f_in_table .f_p{
    position: absolute;
    display: block;
    width: 290px;
    height: 45px;
    margin-left: 322px;
    /* border: 1px red solid; */
    background-color: transparent;
}
.f_in_table .f_s{
    position: absolute;
    display: block;
    float: right;
    width: 125px;
    height: 45px;
    margin-left: 644px;
    /* border: 1px yellow solid; */
    background-color: transparent;
}
.f_in_table input{
    font-size: 14px;
    line-height: 24px;
    color: rgb(100, 100, 100);
    margin-top: 2px;
    width: 290px;
    height: 43px;
    border: 0;  
    outline: none; 
    background-color: rgba(0, 0, 0, 0);
}
.f_in_table input:hover{
    border:1px solid white; 
}
.f_in_table .f_s input{
    margin: 2px;
    font-size: 14px;
    line-height: 24px;
    color: rgb(100, 100, 100);
    width: 125px;
    height: 45px;
    border: 0;  
    outline: none; 
    background-color: rgba(0, 0, 0, 0);
}
.f_in_table .f_s input:hover{
    margin-top:4px;  
    margin-bottom:0px; 
}
/* second */
.second{
    margin: 0 auto;
    padding: 0;
    height: 710px;
    width: 1600px;
    background-color:#f2f2f2;
    border: 1px transparent solid;
    border-bottom: 1px gray solid;
}
.second .pic{
    margin-top: 80px;
    margin-left: 470px;
    width: 680px;
    height: 110px;
    /* border: 1px yellow solid; */
}
.second .pic img{
    max-width: 100%;
    max-height: 100%;
    margin-left: auto;
 
}
.second .s_in{
    position: absolute;
    height: 300px;
    width: 1045px;
    margin-top: 50px;
    left:50%;
    margin-left: -540px;
    /* border: 1px red solid; */
    
}
 
.second .s_in .s_in_d{
    float: left;
    width: 468Px;
    height: 142px;
    margin: 5px 20px;
    /* border: 1px palevioletred solid; */
}
.second .s_in .s_in_d img{
    width: 49px;
    height: 49px;
    float: left;
    margin-top: 0px;
    float: left;
}
 
.second .s_in .s_in_d .s_in_id_w{
    width: 370px;
    height: 100px;
    float: left;
    margin-left: 30px;
}
.second .s_in .s_in_d h3{
    display: block;
    float: left;
    margin-bottom: 25px;
    margin-left: 30px;
    font-weight: 60;
    line-height: 32px;
    font-size: 20px;
    
}
.second .s_in .s_in_d p{
    display: block;
    float: left;
    margin-left: 30px;
    font-weight: 60;
    line-height: 26px;
    font-size: 16px;
}
/* three */
.three{
    margin: 0 auto;
    padding: 0;
    height: 800px;
    width: 1600px;
    /* background:url(./img/前端学院设计图_20.png); */
    border: 1px transparent solid;
    border-bottom: 1px gray solid;
}
.three .three_l{
    float: left;
    width: 530px;
    height: 460px;
    margin-top: 175px;
    margin-left: 314px;
    /* border: 1px yellow solid; */
}
.three .three_l .three_l_w{
    position: relative;
    width: 360px;
    height: 335px;
    /* border: 1px yellow solid; */
 
}
.three .three_l .three_l_w h3{
    display: block;
    line-height: 52px;
    font-size: 42px;
    color:#ffffff;
    font-weight: 80;
 
}
.three .three_l .three_l_w p{
    display: block;
    margin-top: 30px;
    line-height: 28px;
    font-size: 18px;
    color:#b6b8b4;
    font-weight: 60;
}
.three .three_l .three_l_f {
    position: absolute;
    width: 515px;
    height: 65px;
    /* border: 1px yellow solid; */
    margin-top: 45px;
}
.three .three_l .three_l_f .btn{
    position: relative;
    width: 240px;
    height: 60px;
    /* border: 1px yellow solid; */
    border-radius: 3px;
    text-align: center;
    color: rgb(255, 255, 255);
    background-color: rgba(0, 0, 0, 0);
    border: 1px transparent solid;
}
.three .three_l .three_l_f :last-child{
    position: relative;
    float: right;
    margin-right: 12px
}
.three .three_l .three_l_f .btn:hover {
    color: rgb(20, 17, 17);
    background-color: white;
    box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24);
   
}
.three .three_l .three_l_f .btn:focus{
    outline: none;
}
.three_r{
    width: 585px;
    height: 537px;
    position: absolute;
    margin-top: 135px;
    margin-left: 1015px;
    /* border: 1px yellow solid; */
    background-color: #fff;
}
.three_r img{
    max-width: 100%;
    max-height: 100%;
 
}
/* fouth */
.fouth{
    width: 1600px;
    height: 1605px;
    margin: 0 auto;
    padding: 0;
    border: 1px transparent solid;
    border-bottom: 1px gray solid;
}
.fouth .f_top{
    margin-left: 315px;
    margin-top: 100px;
    width: 970px;
    height: 45px;
    /* border: 1px yellow solid; */
    text-align: center;
}
.fouth .f_top h1{
    line-height: 52px;
    font-size: 42px;
    font-weight: 60;
}
.fouth .f_word{
    margin-top: 75px;
    margin-left: 315px;
    width: 970px;
    height: 520px;
    /* border: 1px yellow solid; */
    display: flex;
    display: -webkit-flex;
}
.w1{
    width: 270px;
    height: 315px;
    /* border: 1px red solid; */
    text-align: center;
 
}
.w1 img{
    margin-bottom: 20px;
}
.w1:nth-child(2),.w1:first-child {
    margin-right: 80px;
}
 
.w1 p{
    font-weight: 40;
    line-height: 26px;
    font-size: 16px;
}
.f_c1 ,.f_c2{
    margin-left: 315px;
    width: 970px;
    height: 365px;
    /* border: 1px red solid; */
    text-align: center;
}
.f_c2{
    margin-top: 65px;
}
.f_c1 img ,.f_c2 img{
    width: 570px;
    height: 350px;
}
.f_c1 img {
    float: left;
}
.f_c2 img {
    float: right;
}
.f_c1_w1{
    width: 320px;
    height: 350px;
    float: right;
    /* border: 1px red solid; */
}
.f_c1_w2{
    width: 320px;
    height: 350px;
    float: left;
    /* border: 1px red solid; */
}
.f_c1_w1 h1 ,.f_c1_w2 h1{
    line-height: 32px;
    font-size: 20px;
    font-weight: 600;
    text-align: left;
    display: block;
    margin-top: 80px;
    margin-bottom: 27px;
}
.f_c1_w1 p ,.f_c1_w2 p{
    line-height: 28px;
    font-size: 16px;
    font-weight: 100;
    text-align: left;
    display: block;
}
/* fifth */
.fifth{
    width: 1600px;
    height: 1088px;
    margin: 0 auto;
    padding: 0;
    border: 1px transparent solid;
    border-bottom: 1px gray solid;
}
.fifth .fifth_word{
    height: 160px;
    width: 100%;
    text-align: center; 
}
.fifth .fifth_word h1{
    display: block;
    margin-top: 75px;
    line-height: 52px;
    font-size: 42px;
    font-weight: 60;
}
.fifth .fifth_word p{
    line-height: 28px;
    font-size: 18px;
    font-weight: 100;
    display: block;
    margin-top: 45px;
}
.fifth_pep{
    float: left;
    margin-left: 315px;
    margin-top: 40px;
    width: 970px;
    height: 735px;
    /* border:1px yellow solid; */
   display: flex;
   flex-wrap: wrap;
   
}
.fifth_pep .fifth_pep_pic{
    width: 472px;
    height: 336px;
    background-color: #000000;
}
.fifth_pep .fifth_pep_pic:nth-child(1),.fifth_pep .fifth_pep_pic:nth-child(3){
    margin-right: 20px;
}
.fifth_pep img{
    width: 100%;
    height: 100%;
}
.fifth_pep img:hover{
    opacity: 0.5;
    box-shadow: 10px 10px 5px #888888;
}
/* fix */
.fix{
    width: 1600px;
    height: 706px;
    margin: 0 auto;
    padding: 0;
    border: 1px transparent solid;
}
.fix .fix_l{
    width: 470px;
    height: 560px;
    margin-top: 72px;
    margin-left: 315px;
    border: 1px gray solid;
    border-radius: 10px;
    text-align: center;
    float: left;
}
.fix .fix_l h1{
    line-height: 31px;
    font-size: 16px;
    font-weight: 80;
    display: block;
    margin-top: 47px;
}
.fix .fix_l form input{
    width: 370px;
    height: 52px;
    margin-top: 30px;
    /* text-align: center; */
    color: gray;
    border-radius: 5px;
    border: 1px gray solid;
    text-indent: 2px;
}
.fix .fix_l form input:focus{
    outline: none;
}
.fix .fix_l form input:hover{
    border: 2px gray solid;
}
.fix .fix_l form input:nth-child(3){
    width: 370px;
    height: 145px;
}
.fix .fix_l form input:last-child{
    background: #141414;
    color: honeydew;
    text-align: center;
}
 
.fix .fix_r{
    float: right;
    width: 470px;
    height: 560px;
    margin-top: 72px;
   margin-right: 315px;
    border: 1px gray solid;
    border-radius: 10px;
    text-align: center;
}
.fix .fix_r h1{
    text-align: left;
    display: block;
    margin-top: 100px;
    line-height: 52px;
    font-size: 42px;
    font-weight: 40;
    margin-left: 85px;
}
.fix .fix_r p{
    display: block;
    margin-top: 32px;
    line-height: 26px;
    font-size: 16px;
    font-weight: 40;
    text-align: left;
    margin-left: 85px;
}
.fix .fix_r ul{
    list-style-image: url(./img/最后_06.png);
    display: block;
    margin-top: 40px;
    width: 380px;
    height: 170px;
    float: right;
    /* margin-left: 85px; */
    /* border: 1px yellow solid; */
    list-style: none;
    text-align: left;
}
.fix .fix_r ul li{
    line-height: 55px;
    width: 300px;
}
.fix .fix_r ul li img{
    display: inline-block;
    vertical-align: middle;
}
.fix .fix_r ul li a{
    display: inline-block;
    margin-left: 20px;
    line-height: 26px;
    font-size: 16px;
    text-align: left;
    text-decoration:none;
    color:gray; 
}
.fix .fix_r ul li a:first-child{
    margin-top: 10px;
}
/* last */
.last{
    margin: 0 auto;
    display: flex;
    width: 1600px;
    height: 410px;
    background-color: #000000;
    border: 1px transparent solid;
}
.last_in{
    width: 300px;
    height:230px;
    /* border: 1px red solid; */
    margin-top: 80px;
}
.last_in:first-child{
    margin-left: 215px;
}
.last_in h3{
    color: white;
    line-height: 28px;
    font-size: 14px;
    margin-bottom: 30px;
}
.last_in ul li{
    /* color: white;
    line-height: 46px;
    font-size: 12px;
    font-weight: 40; */
    list-style: none;
  
}
.last_in ul li a{
    color: white;
    line-height: 46px;
    font-size: 12px;
    font-weight: 20;
    text-decoration:none;
}
.last_in ul li a:hover{
    text-decoration: blink;
}